| Originally posted by gotclout@Dec 13 2004, 10:50 AM |
what are possible gains of say supercharging the 225? its stock 170 hp right?
I take it you mean 325 - 170hp is the 323's, 184hp is 325.
An SC on a 323/325 (using AA as example) puts you around 270hp, give or take a few hp. Biggest bang for the buck you can get on a BMW short of specialized turbos, which you'd better have a good mechanic in your back pocket.. (AA's are bolt-on SC's, considered the safest SC for a BMW). Turbo's will significantly reduce engine life, as they usually require more PSI than our engines can take(stock), for optimal 'thrust'. SC's are generally safe, running within the psi limits of the engine it's designed for.
AA's SC is on sale for E46 models for $4900 right now, that's 1K off the normal price (consider them paying for your SC install - about 14 manhours=1K)
You can do other things to boost hp/torque as well - Cams, exhaust, pullies (dunno if this is an option if you put a SC in), and the 'poor man's turbo' a diff swap (not a hp/tq gainer, but can knock .3-.5 off your times depending on what you have now, and what you move too - almost effective as a turbo, hence the 'poor man's turbo' comment)
But if you're buying new, you're crazy to mod it like that, get a 330 and sit on it, and enjoy. If you want a BMW and want to mod it, get an older 330 or last-run 328.